The Western frontier stretched from the Mississippi River to the Pacific Ocean.
and Finally, Pioneers greatly underestimated the Western Frontier ( Purple, Orange, and Green land represent the frontier)
The railroad was called the central pacific. When another railroad, the union pacific met with Stanford's the two railroads would stretch from coast to coast.
The work was hazardous and low pay. Cutting through Sierra Nevada, Chinese manual laborers were slashed by wind and snow. Avalanches buried weeks of work and killed workers by the score.
and Finally, Pioneers greatly underestimated the Western Frontier ( Purple, Orange, and Green land represent the frontier)